System of electrical distribution.



No. 684,338. Patented Oct. 8, I90l. H. J. GILLE;

SYSTEM OF ELECTRICAL DISTRIBUTION.

(Application filed Nov. 15, 1900.) (No Model.)

wwu s WITNESSES: a INVENTOR flaw-$3M gm 9' 02M BY 71 ATTORNEY UNITEDSTATES PATENT OFFICE.

HENRY JOHN GILLE, on ST. PAUL, MINNESOTA, ASSIGNOR or oNF-IIALF TOGENERAL INoANDEsoENT ARC LIGHT ooMPANY, on NEW YORK, N. v.

SYSTEM OF ELECTRICAL DISTRIBUTION.

SPECIFICATION forming part of Letters Patent No. 684,338, dated October8, 1901.

Application filed November 15, 1900. Serial No. 36,592. (No model.)

To aZZ whom it may concern:

Be it known that I, HENRY JOHN GILLE, a citizen of the United States,residing at- St. Paul, county of Ramsey, State of Minnesota, haveinvented certain new and useful Improvements in Systems ofElectricalDistribution, of which the following is a specification.

In United States Letters Patent No. 27 4,290, issued to Thomas A.Edison, of Menlo Park, New Jersey, on March 20, 1883, there is describeda system of electrical distribution involving the employment of adivided source of electrical energy, a number of conductors leadingtherefrom, a number of translating devices arranged in multiple arebetween pairs of the conductors and in series with each other, and oneor more compensating conductors carried back to the points of divisionof the source of energy, the number of compensating conductors dependingupon the number of translating devices and number of divisions in thesource of energy in seriesas, for instance, with three conductors andtwo translating devices in series and a single division in the source ofenergy one compensating conductor, with four wires three translatingdevices, and two divisions in the source of energy two compensatingconductors, this system being now generally known in the art as theEdison threewire system of electrical distribution.

My improved system of electrical distribution comprehends the generalfeatures of the Edison three-wire system, with the ditference thatwhereas in the Edison system the compensating conductors of eachtranslation-circuit, formed of three wires where there is a number, arebrought back independently to divided sources of energy. In my systemall of such compensating conductors are brought back and connected to asingle conductor, which is connected to all the sources of energy attheir points of division. In other words, assuming that there are twothree-wire circuits, in the Edison system there would be fourgenerators, pairs of which would be connected in series with acompensating conductor connected between the generators of each pair. Inmy system the compensating conductors would be connected to a singleconductor, which may be termed the main neutral or compensatingconductor, and this conductor connected to each pair of generators(there may be two, three, or more) at the point of division between eachpair of generators, the object of this arrangement being to obtaingreater flexibility in the system as a whole than is possible where eachtranslation-circuit is dependent upon individual divided sources ofenergy.

The accompanying drawings will serve to illustrate my invention, inwhich- Figure 1 is a diagram illustrating an organization of anapparatus and circuits adapted to carry out the invention. Fig. 2 is adiagram illustrating the manner in which either of two independentdivided sources of energy may be connected to a three-wiretranslationcircuit through a single compensating conductor. Fig. 3 is adiagram illustrating a plan of circuit connections for the Edisonthree-wire system with two divided sources of energy in series.

Similar letters of reference indicate like parts.

In the drawings, A A A A A A A A represent dynamo-electric machines,motorgenerators, storage batteries, or other sources of electric energy;E B B station bus-bars. Those marked B (1 2 3 4) may be considered theplus bars, those marked B (1 2 3 4) the minus bars, and that marked Bthe neutral (:lz) bar. The number of plus and minus bus-bars will dependupon the number of sources of energy employed. For instance, in thepresent case there are shown eight sources of energy,orfourdividedsources of energy, and eachdivided source of energy consisting of twogenerators or storage batteries. The pairs of generators or storagebatteries connected through one terminalfor instance,the plus terminalofone generator or storage battery to one of the plusbus-bars,and theother terminal-for instance, the minus terminal-of the second generatoror storage battery to one of the minus bus-bars, and the neutral pointbetween the generators or pairs of storage batteries connected to theneutral bus-bar. In other w0rds,each divided source of energy A A A A AA A A is connected at its neutral point to the neutral bus-bar; but oneneutral bus-bar is used irrespective of the number of divided sources ofenergy pensating conductor 1).

E represents motors or other similar translating devices connected inmultiple arc with the distributing-conductors b b. The conductors b b ofthe distributing-circuit are respectively'connected to the switches F F.These switches are of special construction and are arranged to coactwith the contacts g g g g of the switch F and h h h h of the switch F,which contacts are respectively connected, those marked 9 g g g insuccessive order to the plus bus-bars B (l 2 3 4) and those marked 71.in successive order to the minus bus-bars B, (1 2 3 4.) The switches Fand F are of peculiar construction and consist, essentially, of ahorizontally-disposed rod H, on which is mounted to slide horizontally aswitch-lever I. It will be readily understood that by means of theswitch-levers of the switch F all of the plus bus-bars maybeindividually connected to the translationcircuit conductor 19, and bymeans of the switch-lever I of the switch F all of the minus plus-barsmay be individually connected to the translation-circuit conductor 1).

From the foregoing description it will be apparent that any one of thedivided sources of energy may be connected at will to either one of thetranslation circuits O--for instance, with the switch-lever I in theposition shown at the left of the translation-circuit-that is, coactingwith the contacts 9 on one side and h upon the opposite side' thedivided sources of energy represented by the generators A A would beconnected to this translation-circuit, or with the switch-levers in theposition shown at the right of the translation-circuitthat is, with theswitchlevers coacting with the contacts g and 72 the divided sources ofenergy represented by the storage batteries A A would be connected tothis translation-circuit. By following out the circuit connectionsitwill be observed, as before stated, that any one of the divided sourcesof energy can be connected with either of thetranslation-circuits.Manifestlyafurther number of divided sources of energy ortranslation-circuits could be connected with? p out in any wise alteringthe general arrangeimproved system the neutral conductor always remainsthe neutral conductor, irrespective' of the number of divided sources ofenergy employed, whereas in the Edison system when, for instance, twodivided sources of energy are coupled in series the neutral conductor 5of a single divided source of ensingle neutral conductor connecting thenontral point of the divided sources of energy, as in Fig. 2. Further,it would be possible to make further circuit connections through theinterposition of suitable switches, as in the case where thetranslation-circuit consisted of more than two lamps in series, in whichcase the neutral conductors of the translation-circuit would be carriedback to the main neutral bus-bar B Having thus described my invention, Iclaim- 1. A system of electrical distribution having in combination thefollowing elements, a number of sources of electrical energy, a seriesof bus-bars of uniform potential each connected to one pole of onesource of energy, a neutral bus-bar connected with the remain ing poleof each source of energy, one or more three-wire translation-circuits,the neutral conductor of which is connected to the neutral bus-bar, andmeans for connecting the external conductors of said translation circuitor circuits respectively with pairs of said bus-bars.

2. A system of electrical distribution hav ing in combination thefollowing elements, a number of sources of electrical energy, a seriesof bus-bars of uniform potential each con nected to one pole of onesource of energy, a neutral bus-bar connected with the remaining pole ofeach source of energy, one or more three-wire translation-circuits, theneu-' tral conductor of which is connected to the neutral bus-bar, meansfor connecting the external conductors of said translation circuit orcircuits respectively with pairs of said busbars, andtranslating devicesarranged in multiple series in said translation-circuits.

3. A system of electrical distributionhaving in combination thefollowing elements, a number of sources of electrical energy, a seriesof bus-bars of uniform potential each connected to one pole of onesource of energy, a neutralbus-ba'r connected with the remaining pole ofeach source of energy, one or more three-wire translation-circuits, theneutral conductor of which is connected to the neutral bus-bar, meansfor connecting the ex ternal conductors of said translation circuit Intestimony whereof I aflix my signature or circuits respectively withpairs of said busin the presence of two Witnesses.

bars, translating devices arranged in multiw T 7 ple series in saidtranslation-circuits, and HENRX JOHN GILLE' 5 translating devicesarranged in multiple of WVitnesses: the external conductors of saidtranslation- OONSTAN JENSEN, circuits. A. P. LATHROP.

